First, each class lasts about an hour. Second, I will prepare courses according to students' requirements, such as European history, South Asian history and North American history. Thirdly, in the first 15 minutes of each class, I will use a vivid video to show the course to be taught, which will give students a more visible feeling. In the next 20 minutes, I will correct or reiterate the impact and results of this historical event according to the content of the video. In the next 15 minutes, I will discuss the merits and demerits of various aspects of the historical event, so as to help students develop critical thinking. The rest of the time is left for the student to discuss his own views.